How can I simplify the code for this simple calculator?

Question

https://code.sololearn.com/Wc4zYdUuBQh4/?ref=app

my code is obviously too long for such a simple "calculator" but I'm sure there's a way to make it 5 times smaller, any suggestions?
ps: the rest button will not work unless I put it In a form tag, which will cause problems.

Answer 1

Try this!! :)
https://code.sololearn.com/WSR3j5kC6EN9/#html

Answer 2

that is awesome!! big thanks Sabrina :)